feat: some unity game object interfaces

engine/GameObject.cpp

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+//
+// Created by atolstenko on 11/22/2022.
+//
+
+#include "GameObject.h"

engine/GameObject.h

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+#ifndef MOBAGEN_ENGINE_GAMEOBJECT_H_
+#define MOBAGEN_ENGINE_GAMEOBJECT_H_
+
+class GameObject {
+
+};
+
+#endif //MOBAGEN_ENGINE_GAMEOBJECT_H_

engine/HideFlags.h

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+// ref https://docs.unity3d.com/ScriptReference/HideFlags.html
+// If you set hide flags to DontSaveInEditor, DontSaveInBuild or HideInHierarchy, this internally removes the object from the Unity Scene, as well as from its current physics scene (this includes both 2D and 3D physics scenes). This also causes the object to trigger its OnDisable and OnEnable calls.
+enum class HideFlags{
+  // A normal, visible object. This is the default.
+  None=0,
+  // The object will not appear in the hierarchy.
+  HideInHierarchy=1,
+  // It is not possible to view it in the inspector.
+  HideInInspector=2,
+  // The object will not be saved to the Scene in the editor.
+  DontSaveInEditor=4,
+  // The object is not editable in the Inspector.
+  NotEditable=8,
+  // The object will not be saved when building a player.
+  DontSaveInBuild=16,
+  // The object will not be unloaded by Resources.UnloadUnusedAssets.
+  DontUnloadUnusedAsset = 32,
+  // The object will not be saved to the Scene. It will not be destroyed when a new Scene is loaded. It is a shortcut for HideFlags.DontSaveInBuild | HideFlags.DontSaveInEditor | HideFlags.DontUnloadUnusedAsset.
+  DontSave = 52,
+  // The GameObject is not shown in the Hierarchy, not saved to Scenes, and not unloaded by Resources.UnloadUnusedAssets.
+  HideAndDontSave=128
+};

engine/JobManager.cpp

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+#include "JobManager.h"
+bool JobManager::IsRunningInMainThread() {
+  // todo: implement
+  return true;
+}

engine/JobManager.h

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+#ifndef MOBAGEN_ENGINE_JOBMANAGER_H_
+#define MOBAGEN_ENGINE_JOBMANAGER_H_
+
+class JobManager {
+ public:
+  static bool IsRunningInMainThread();
+};
+
+#endif //MOBAGEN_ENGINE_JOBMANAGER_H_

engine/Object.cpp

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+#include "Object.h"
+#include <typeinfo>
+
+template<class T>
+std::vector<T> Object::FindObjectsOfType() {
+  auto typehash = typeid(T).hash_code();
+  return std::vector<T>();
+}

engine/Object.h

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+#ifndef MOBAGEN_ENGINE_OBJECT_H_
+#define MOBAGEN_ENGINE_OBJECT_H_
+
+#include <string>
+#include <vector>
+
+class Object {
+ public:
+  const std::string& name() const { return _name; }
+  void name(const std::string& name) { _name = name; }
+ private:
+  std::string _name;
+
+ public:
+  const std::uint64_t& instanceId() const { return _instanceId; }
+ private:
+  int _instanceId; // todo: initialize this properly
+
+  // todo: equals comparison and attribution via copy or move ?
+ public:
+  Object(); // todo: implement copy and set internal variables
+
+ public:
+  // todo: mark to be deleted next frame
+  static void Destroy(const Object& object);
+
+ public:
+  template<class T>
+  static std::vector<T> FindObjectsOfType();
+
+ public:
+  static void DontDestroyOnLoad(const Object& object);
+
+ public:
+  std::string ToString();
+};
+
+
+#endif //MOBAGEN_ENGINE_OBJECT_H_

engine/Scene.cpp

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+//
+// Created by atolstenko on 11/22/2022.
+//
+
+#include "Scene.h"

engine/Scene.h

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+#ifndef MOBAGEN_ENGINE_SCENE_H_
+#define MOBAGEN_ENGINE_SCENE_H_
+
+class Scene {
+
+};
+
+#endif //MOBAGEN_ENGINE_SCENE_H_

engine/Utils.cpp

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+//
+// Created by atolstenko on 11/22/2022.
+//
+
+#include "Utils.h"

engine/Utils.h

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+#ifndef MOBAGEN_ENGINE_UTILS_H_
+#define MOBAGEN_ENGINE_UTILS_H_
+
+class Utils {
+};
+
+#endif //MOBAGEN_ENGINE_UTILS_H_